问题补充：
---When did you ? --- the morning of November 20th.
A. arrive at, In
B. get to, In
C. get, On
D. arrive, On
答案：
A. arrive at, In
B. get to, In
C. get, On
(答案→)D. arrive, On
解析：此题考查动词到达的不同表达方式；arrive是不及物动词，后跟地点时要用at或in，也可单独使用，后面不跟地点时；确指某天的上午，下午或晚上时要用介词on.
